NPQ10

What is the minimum SPF sunscreen rating that is effective for preventing skin damage?

15

Which form of ionizing radiation is least penetrating, capable of being blocked by a layer of skin?

alpha particles

Which of the following parts of the body is most vulnerable to the damaging effects of microwaves?

eyes

Which of the following statements in reference to health effects of radiation is false?

if a person received a 2 Sv whole body dose of radiation within 5 minutes, the damage would be less than if the same dose were received over a period of 5 months

When would the largest number of health problems associated with detonation of "dirty bomb" occur?

immediately after the initial explosion, due to the blast itself

What disease is most frequently associated with low-level exposure to ionizing radiation?

leukemia

Which type of skin cancer has the highest fatality rate?

malignant melanoma

Which of the following statements about skin cancer is false?

malignant melanomas are the most common type of skin cancer, responsible for 400,000 new cases annually

For the average American, which of the following represents the single largest source of exposure to ionizing radiation on a yearly basis?

radon gas

Why are substances that emit beta particles of special concern?

they are chemically similar to normal body constituents, if taken internally they are incorporated into the bones or thyroid

The sharp increase in skin cancer rates during the past few decades in the U.S. has largely been attributed to excess exposure to:

ultraviolet light

Which of the following forms of radiation is non-ionizing?

ultraviolet light